Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual era o número SlNo do contato da pessoa SDE (P), Thiruppattur?
 ###Tabelas: CREATE TABLE results_in_federal_elections (results_in_federal_elections_id AUTO_INCREMENT PRIMARY KEY, Year INT, Office VARCHAR, Candidate VARCHAR, Popular Votes INT, Percentage VARCHAR) CREATE TABLE list_of_wisden_trophy_series (list_of_wisden_trophy_series_id AUTO_INCREMENT PRIMARY KEY, Series VARCHAR, Season VARCHAR, Host VARCHAR, Tests INT, England INT, West Indies INT, Draw INT, Series result VARCHAR, Holder at the end of the series VARCHAR) CREATE TABLE ice_dancing (ice_dancing_id AUTO_INCREMENT PRIMARY KEY, Rank INT, WS Points INT, Name VARCHAR, Country VARCHAR, 09-10 I/O best INT, 09-10 GP/JGP best INT, 09-10 GP/JGP 2nd INT, 09-10 OI best INT, 09-10 OI 2nd INT, 08-09 I/O best INT, 08-09 GP/JGP best INT, 08-09 GP/JGP 2nd INT, 08-09 OI best INT, 08-09 OI 2nd INT) CREATE TABLE karaikudi_ssa_-_bsnl (karaikudi_ssa_-_bsnl_id AUTO_INCREMENT PRIMARY KEY, SlNo INT, Name of the City VARCHAR, Address VARCHAR, Contact Person VARCHAR, Telephone No VARCHAR, Facilities Offered VARCHAR) CREATE TABLE major_awards (major_awards_id AUTO_INCREMENT PRIMARY KEY, Year INT, Location VARCHAR, Fans' Choice Award VARCHAR, Male Artist of the Year VARCHAR, Female Artist of the Year VARCHAR, Group or Duo of the Year VARCHAR)  
SELECT SlNo FROM karaikudi_ssa_-_bsnl WHERE Contact Person = SDE (P), Thiruppattur